diff --git a/tools/gframework-config-tool/src/configPath.js b/tools/gframework-config-tool/src/configPath.js
new file mode 100644
index 00000000..b85651e2
--- /dev/null
+++ b/tools/gframework-config-tool/src/configPath.js
@@ -0,0 +1,64 @@
+/**
+ * Join one object property onto a logical config path.
+ *
+ * @param {string} parentPath Parent logical path.
+ * @param {string} propertyName Property name.
+ * @returns {string} Combined logical path.
+ */
+function joinPropertyPath(parentPath, propertyName) {
+    return parentPath ? `${parentPath}.${propertyName}` : propertyName;
+}
+
+/**
+ * Join one indexed array item onto a logical config path.
+ *
+ * @param {string} arrayPath Array logical path.
+ * @param {number} itemIndex Zero-based item index.
+ * @returns {string} Indexed logical path.
+ */
+function joinArrayIndexPath(arrayPath, itemIndex) {
+    return `${arrayPath}[${itemIndex}]`;
+}
+
+/**
+ * Join one array-item template marker onto a logical config path.
+ *
+ * @param {string} arrayPath Array logical path.
+ * @returns {string} Template logical path.
+ */
+function joinArrayTemplatePath(arrayPath) {
+    return `${arrayPath}[]`;
+}
+
+/**
+ * Check whether a logical path still contains one template array marker.
+ *
+ * @param {string} path Logical path.
+ * @returns {boolean} True when the path contains a template array segment.
+ */
+function isTemplatePath(path) {
+    return String(path).includes("[]");
+}
+
+/**
+ * Split one logical object path into individual property segments.
+ * The current form model only supports dotted object paths here and keeps
+ * array indexing as part of other dedicated helpers.
+ *
+ * @param {string} path Logical path.
+ * @returns {string[]} Property segments.
+ */
+function splitObjectPath(path) {
+    return String(path)
+        .split(".")
+        .map((segment) => segment.trim())
+        .filter((segment) => segment.length > 0);
+}
+
+module.exports = {
+    isTemplatePath,
+    joinArrayIndexPath,
+    joinArrayTemplatePath,
+    joinPropertyPath,
+    splitObjectPath
+};
diff --git a/tools/gframework-config-tool/src/configValidation.js b/tools/gframework-config-tool/src/configValidation.js
index c233eabb..832cc909 100644
--- a/tools/gframework-config-tool/src/configValidation.js
+++ b/tools/gframework-config-tool/src/configValidation.js
@@ -1,3 +1,11 @@
+const {
+    joinArrayIndexPath,
+    joinArrayTemplatePath,
+    joinPropertyPath,
+    splitObjectPath
+} = require("./configPath");
+const {ValidationMessageKeys} = require("./localizationKeys");
+
 /**
  * Parse the repository's minimal config-schema subset into a recursive tree.
  * The parser intentionally mirrors the same high-level contract used by the
@@ -137,7 +145,7 @@ function extractYamlComments(text) {
 
             const itemIndex = currentContext.nextIndex || 0;
             currentContext.nextIndex = itemIndex + 1;
-            const itemPath = `${currentContext.path}[${itemIndex}]`;
+            const itemPath = joinArrayIndexPath(currentContext.path, itemIndex);
             assignPendingComments(comments, itemPath, pendingComments);
             pendingComments = [];
 
@@ -150,37 +158,37 @@ function extractYamlComments(text) {
                 continue;
             }
 
-            const inlineObjectMatch = /^([A-Za-z0-9_]+):(.*)$/u.exec(rest);
-            if (!inlineObjectMatch) {
+            const inlineObjectMapping = parseYamlMappingText(rest);
+            if (!inlineObjectMapping) {
                 continue;
             }
 
             const itemObjectContext = {indent: indent + 2, type: "object", path: itemPath, nextIndex: 0};
             stack.push(itemObjectContext);
 
-            const key = inlineObjectMatch[1];
-            const parsedValue = splitYamlValueAndInlineComment(inlineObjectMatch[2].trim());
+            const key = inlineObjectMapping.key;
+            const parsedValue = splitYamlValueAndInlineComment(inlineObjectMapping.rawValue.trim());
             if (parsedValue.comment) {
-                comments[`${itemPath}.${key}`] = parsedValue.comment;
+                comments[joinPropertyPath(itemPath, key)] = parsedValue.comment;
             }
 
             const nextLine = findNextMeaningfulLine(lines, index + 1);
             if (parsedValue.value.length === 0 && nextLine && nextLine.indent > indent) {
-                stack.push(createContextForChild(`${itemPath}.${key}`, nextLine));
+                stack.push(createContextForChild(joinPropertyPath(itemPath, key), nextLine));
             }
 
             continue;
         }
 
-        const match = /^([A-Za-z0-9_]+):(.*)$/u.exec(trimmed);
-        if (!match) {
+        const mapping = parseYamlMappingText(trimmed);
+        if (!mapping) {
             pendingComments = [];
             continue;
         }
 
-        const key = match[1];
-        const valueInfo = splitYamlValueAndInlineComment(match[2].trim());
-        const currentPath = currentContext.path ? `${currentContext.path}.${key}` : key;
+        const key = mapping.key;
+        const valueInfo = splitYamlValueAndInlineComment(mapping.rawValue.trim());
+        const currentPath = joinPropertyPath(currentContext.path, key);
         assignPendingComments(comments, currentPath, pendingComments);
         pendingComments = [];
 
@@ -282,16 +290,16 @@ function applyFormUpdates(originalYaml, updates) {
     const commentUpdates = updates.comments || {};
 
     for (const [path, value] of Object.entries(scalarUpdates)) {
-        setNodeAtPath(root, path.split("."), createScalarNode(String(value)));
+        setNodeAtPath(root, splitObjectPath(path), createScalarNode(String(value)));
     }
 
     for (const [path, values] of Object.entries(arrayUpdates)) {
-        setNodeAtPath(root, path.split("."), createArrayNode(
+        setNodeAtPath(root, splitObjectPath(path), createArrayNode(
             (values || []).map((item) => createScalarNode(String(item)))));
     }
 
     for (const [path, items] of Object.entries(objectArrayUpdates)) {
-        setNodeAtPath(root, path.split("."), createArrayNode(
+        setNodeAtPath(root, splitObjectPath(path), createArrayNode(
             (items || []).map((item) => createNodeFromFormValue(item))));
     }
 
@@ -440,7 +448,7 @@ function parseSchemaNode(rawNode, displayPath) {
             : [];
         const properties = {};
         for (const [key, propertyNode] of Object.entries(value.properties || {})) {
-            properties[key] = parseSchemaNode(propertyNode, combinePath(displayPath, key));
+            properties[key] = parseSchemaNode(propertyNode, joinPropertyPath(displayPath, key));
         }
 
         return {
@@ -455,7 +463,7 @@ function parseSchemaNode(rawNode, displayPath) {
     }
 
     if (type === "array") {
-        const itemNode = parseSchemaNode(value.items || {}, `${displayPath}[]`);
+        const itemNode = parseSchemaNode(value.items || {}, joinArrayTemplatePath(displayPath));
         return {
             type: "array",
             displayPath,
@@ -497,7 +505,7 @@ function validateNode(schemaNode, yamlNode, displayPath, diagnostics, localizer)
         if (!yamlNode || yamlNode.kind !== "array") {
             diagnostics.push({
                 severity: "error",
-                message: localizeValidationMessage("expectedArray", localizer, {
+                message: localizeValidationMessage(ValidationMessageKeys.expectedArray, localizer, {
                     displayPath
                 })
             });
@@ -505,7 +513,12 @@ function validateNode(schemaNode, yamlNode, displayPath, diagnostics, localizer)
         }
 
         for (let index = 0; index < yamlNode.items.length; index += 1) {
-            validateNode(schemaNode.items, yamlNode.items[index], `${displayPath}[${index}]`, diagnostics, localizer);
+            validateNode(
+                schemaNode.items,
+                yamlNode.items[index],
+                joinArrayIndexPath(displayPath, index),
+                diagnostics,
+                localizer);
         }
         return;
     }
@@ -513,7 +526,7 @@ function validateNode(schemaNode, yamlNode, displayPath, diagnostics, localizer)
     if (!yamlNode || yamlNode.kind !== "scalar") {
         diagnostics.push({
             severity: "error",
-            message: localizeValidationMessage("expectedScalarShape", localizer, {
+            message: localizeValidationMessage(ValidationMessageKeys.expectedScalarShape, localizer, {
                 displayPath,
                 schemaType: schemaNode.type,
                 yamlKind: yamlNode ? yamlNode.kind : "missing"
@@ -525,7 +538,7 @@ function validateNode(schemaNode, yamlNode, displayPath, diagnostics, localizer)
     if (!isScalarCompatible(schemaNode.type, yamlNode.value)) {
         diagnostics.push({
             severity: "error",
-            message: localizeValidationMessage("expectedScalarValue", localizer, {
+            message: localizeValidationMessage(ValidationMessageKeys.expectedScalarValue, localizer, {
                 displayPath,
                 schemaType: schemaNode.type
             })
@@ -538,7 +551,7 @@ function validateNode(schemaNode, yamlNode, displayPath, diagnostics, localizer)
         !schemaNode.enumValues.includes(unquoteScalar(yamlNode.value))) {
         diagnostics.push({
             severity: "error",
-            message: localizeValidationMessage("enumMismatch", localizer, {
+            message: localizeValidationMessage(ValidationMessageKeys.enumMismatch, localizer, {
                 displayPath,
                 values: schemaNode.enumValues.join(", ")
             })
@@ -557,10 +570,16 @@ function validateNode(schemaNode, yamlNode, displayPath, diagnostics, localizer)
  */
 function validateObjectNode(schemaNode, yamlNode, displayPath, diagnostics, localizer) {
     if (!yamlNode || yamlNode.kind !== "object") {
-        const subject = displayPath.length === 0 ? "Root object" : `Property '${displayPath}'`;
+        const subject = displayPath.length === 0
+            ? localizer && localizer.isChinese
+                ? "根对象应为对象。"
+                : "Root object is expected to be an object."
+            : localizer && localizer.isChinese
+                ? `属性“${displayPath}”应为对象。`
+                : `Property '${displayPath}' is expected to be an object.`;
         diagnostics.push({
             severity: "error",
-            message: localizeValidationMessage("expectedObject", localizer, {
+            message: localizeValidationMessage(ValidationMessageKeys.expectedObject, localizer, {
                 subject,
                 displayPath
             })
@@ -572,8 +591,8 @@ function validateObjectNode(schemaNode, yamlNode, displayPath, diagnostics, loca
         if (!yamlNode.map.has(requiredProperty)) {
             diagnostics.push({
                 severity: "error",
-                message: localizeValidationMessage("missingRequired", localizer, {
-                    displayPath: combinePath(displayPath, requiredProperty)
+                message: localizeValidationMessage(ValidationMessageKeys.missingRequired, localizer, {
+                    displayPath: joinPropertyPath(displayPath, requiredProperty)
                 })
             });
         }
@@ -583,8 +602,8 @@ function validateObjectNode(schemaNode, yamlNode, displayPath, diagnostics, loca
         if (!Object.prototype.hasOwnProperty.call(schemaNode.properties, entry.key)) {
             diagnostics.push({
                 severity: "error",
-                message: localizeValidationMessage("unknownProperty", localizer, {
-                    displayPath: combinePath(displayPath, entry.key)
+                message: localizeValidationMessage(ValidationMessageKeys.unknownProperty, localizer, {
+                    displayPath: joinPropertyPath(displayPath, entry.key)
                 })
             });
             continue;
@@ -593,7 +612,7 @@ function validateObjectNode(schemaNode, yamlNode, displayPath, diagnostics, loca
         validateNode(
             schemaNode.properties[entry.key],
             entry.node,
-            combinePath(displayPath, entry.key),
+            joinPropertyPath(displayPath, entry.key),
             diagnostics,
             localizer);
     }
@@ -602,29 +621,31 @@ function validateObjectNode(schemaNode, yamlNode, displayPath, diagnostics, loca
 /**
  * Format one validation message in either English or Simplified Chinese.
  *
- * @param {"expectedArray" | "expectedScalarShape" | "expectedScalarValue" | "enumMismatch" | "expectedObject" | "missingRequired" | "unknownProperty"} key Message key.
+ * @param {string} key Message key.
  * @param {{isChinese?: boolean} | undefined} localizer Optional runtime localizer.
  * @param {Record<string, string>} params Message parameters.
  * @returns {string} Localized validation message.
  */
 function localizeValidationMessage(key, localizer, params) {
+    if (localizer && typeof localizer.t === "function") {
+        return localizer.t(key, params);
+    }
+
     if (localizer && localizer.isChinese) {
         switch (key) {
-            case "expectedArray":
+            case ValidationMessageKeys.expectedArray:
                 return `属性“${params.displayPath}”应为数组。`;
-            case "expectedScalarShape":
+            case ValidationMessageKeys.expectedScalarShape:
                 return `属性“${params.displayPath}”应为“${params.schemaType}”，但当前 YAML 结构是“${params.yamlKind}”。`;
-            case "expectedScalarValue":
+            case ValidationMessageKeys.expectedScalarValue:
                 return `属性“${params.displayPath}”应为“${params.schemaType}”，但当前标量值不兼容。`;
-            case "enumMismatch":
+            case ValidationMessageKeys.enumMismatch:
                 return `属性“${params.displayPath}”必须是以下值之一：${params.values}。`;
-            case "expectedObject":
-                return params.displayPath && params.displayPath.length > 0
-                    ? `属性“${params.displayPath}”应为对象。`
-                    : "根对象应为对象。";
-            case "missingRequired":
+            case ValidationMessageKeys.expectedObject:
+                return params.subject;
+            case ValidationMessageKeys.missingRequired:
                 return `缺少必填属性“${params.displayPath}”。`;
-            case "unknownProperty":
+            case ValidationMessageKeys.unknownProperty:
                 return `属性“${params.displayPath}”未在匹配的 schema 中声明。`;
             default:
                 return key;
@@ -632,19 +653,19 @@ function localizeValidationMessage(key, localizer, params) {
     }
 
     switch (key) {
-        case "expectedArray":
+        case ValidationMessageKeys.expectedArray:
             return `Property '${params.displayPath}' is expected to be an array.`;
-        case "expectedScalarShape":
+        case ValidationMessageKeys.expectedScalarShape:
             return `Property '${params.displayPath}' is expected to be '${params.schemaType}', but the current YAML shape is '${params.yamlKind}'.`;
-        case "expectedScalarValue":
+        case ValidationMessageKeys.expectedScalarValue:
             return `Property '${params.displayPath}' is expected to be '${params.schemaType}', but the current scalar value is incompatible.`;
-        case "enumMismatch":
+        case ValidationMessageKeys.enumMismatch:
             return `Property '${params.displayPath}' must be one of: ${params.values}.`;
-        case "expectedObject":
-            return `${params.subject} is expected to be an object.`;
-        case "missingRequired":
+        case ValidationMessageKeys.expectedObject:
+            return params.subject;
+        case ValidationMessageKeys.missingRequired:
             return `Required property '${params.displayPath}' is missing.`;
-        case "unknownProperty":
+        case ValidationMessageKeys.unknownProperty:
             return `Property '${params.displayPath}' is not declared in the matching schema.`;
         default:
             return key;
@@ -719,14 +740,14 @@ function parseMapping(tokens, state, indent) {
             continue;
         }
 
-        const match = /^([A-Za-z0-9_]+):(.*)$/u.exec(token.text);
-        if (!match) {
+        const mapping = parseYamlMappingText(token.text);
+        if (!mapping) {
             state.index += 1;
             continue;
         }
 
-        const key = match[1];
-        const rawValue = match[2].trim();
+        const key = mapping.key;
+        const rawValue = mapping.rawValue.trim();
         state.index += 1;
 
         let node;
@@ -774,7 +795,7 @@ function parseSequence(tokens, state, indent) {
             continue;
         }
 
-        if (/^[A-Za-z0-9_]+:/u.test(rest)) {
+        if (parseYamlMappingText(rest)) {
             items.push(parseInlineObjectItem(tokens, state, indent, rest));
             continue;
         }
@@ -894,7 +915,7 @@ function renderYaml(node, indent = 0, currentPath = "", commentMap = {}) {
 function renderObjectNode(node, indent, currentPath, commentMap) {
     const lines = [];
     for (const entry of node.entries) {
-        const entryPath = currentPath ? `${currentPath}.${entry.key}` : entry.key;
+        const entryPath = joinPropertyPath(currentPath, entry.key);
         if (commentMap[entryPath]) {
             lines.push(...renderYamlComments(commentMap[entryPath], indent));
         }
@@ -927,7 +948,7 @@ function renderArrayNode(node, indent, currentPath, commentMap) {
     const lines = [];
     for (let index = 0; index < node.items.length; index += 1) {
         const item = node.items[index];
-        const itemPath = `${currentPath}[${index}]`;
+        const itemPath = joinArrayIndexPath(currentPath, index);
         if (commentMap[itemPath]) {
             lines.push(...renderYamlComments(commentMap[itemPath], indent));
         }
@@ -1041,7 +1062,7 @@ function collectSchemaComments(schemaNode, currentPath, commentMap) {
     }
 
     for (const [key, propertySchema] of Object.entries(schemaNode.properties || {})) {
-        const propertyPath = currentPath ? `${currentPath}.${key}` : key;
+        const propertyPath = joinPropertyPath(currentPath, key);
         if (propertySchema.description) {
             commentMap[propertyPath] = propertySchema.description;
         }
@@ -1052,7 +1073,7 @@ function collectSchemaComments(schemaNode, currentPath, commentMap) {
         }
 
         if (propertySchema.type === "array" && propertySchema.items.type === "object") {
-            collectSchemaComments(propertySchema.items, `${propertyPath}[0]`, commentMap);
+            collectSchemaComments(propertySchema.items, joinArrayIndexPath(propertyPath, 0), commentMap);
         }
     }
 }
@@ -1201,14 +1222,66 @@ function splitYamlValueAndInlineComment(rawValue) {
 }
 
 /**
- * Combine a parent path with one child segment.
+ * Parse one YAML mapping entry such as `key: value` or `"complex key": value`.
  *
- * @param {string} parentPath Parent path.
- * @param {string} key Child key.
- * @returns {string} Combined path.
+ * @param {string} text Raw YAML line text without leading indentation.
+ * @returns {{key: string, rawValue: string} | undefined} Parsed mapping entry.
  */
-function combinePath(parentPath, key) {
-    return parentPath && parentPath !== "<root>" ? `${parentPath}.${key}` : key;
+function parseYamlMappingText(text) {
+    const separatorIndex = findYamlKeyValueSeparator(text);
+    if (separatorIndex < 0) {
+        return undefined;
+    }
+
+    const rawKey = text.slice(0, separatorIndex).trim();
+    if (rawKey.length === 0) {
+        return undefined;
+    }
+
+    return {
+        key: normalizeYamlKey(rawKey),
+        rawValue: text.slice(separatorIndex + 1)
+    };
+}
+
+/**
+ * Find the first `:` that acts as a YAML key/value separator.
+ *
+ * @param {string} text Raw YAML line text without leading indentation.
+ * @returns {number} Separator index, or -1 when not found.
+ */
+function findYamlKeyValueSeparator(text) {
+    let inSingleQuote = false;
+    let inDoubleQuote = false;
+
+    for (let index = 0; index < text.length; index += 1) {
+        const character = text[index];
+        if (character === "'" && !inDoubleQuote) {
+            inSingleQuote = !inSingleQuote;
+            continue;
+        }
+
+        if (character === "\"" && !inSingleQuote) {
+            inDoubleQuote = !inDoubleQuote;
+            continue;
+        }
+
+        if (character === ":" && !inSingleQuote && !inDoubleQuote) {
+            return index;
+        }
+    }
+
+    return -1;
+}
+
+/**
+ * Normalize a YAML key token into the logical key name used in the form model.
+ *
+ * @param {string} rawKey Raw YAML key token.
+ * @returns {string} Normalized key name.
+ */
+function normalizeYamlKey(rawKey) {
+    return unquoteScalar(rawKey.trim());
 }
 
 module.exports = {
diff --git a/tools/gframework-config-tool/src/extension.js b/tools/gframework-config-tool/src/extension.js
index 56a3b99b..9695074e 100644
--- a/tools/gframework-config-tool/src/extension.js
+++ b/tools/gframework-config-tool/src/extension.js
@@ -12,6 +12,12 @@ const {
     unquoteScalar,
     validateParsedConfig
 } = require("./configValidation");
+const {
+    isTemplatePath,
+    joinArrayIndexPath,
+    joinArrayTemplatePath,
+    joinPropertyPath
+} = require("./configPath");
 const {createLocalizer} = require("./localization");
 
 const localizer = createLocalizer(vscode.env.language);
@@ -353,11 +359,11 @@ async function openFormPreview(item, diagnostics) {
         return;
     }
 
-    const yamlText = await fs.promises.readFile(configUri.fsPath, "utf8");
-    const parsedYaml = parseTopLevelYaml(yamlText);
-    const commentLookup = extractYamlComments(yamlText);
+    let latestYamlText = await fs.promises.readFile(configUri.fsPath, "utf8");
+    const parsedYaml = parseTopLevelYaml(latestYamlText);
+    const commentLookup = extractYamlComments(latestYamlText);
     const schemaInfo = await loadSchemaInfoForConfig(configUri, workspaceRoot);
-    const canInitializeFromSchema = schemaInfo.exists && yamlText.trim().length === 0;
+    const canInitializeFromSchema = schemaInfo.exists && latestYamlText.trim().length === 0;
 
     const panel = vscode.window.createWebviewPanel(
         "gframeworkConfigFormPreview",
@@ -376,7 +382,7 @@ async function openFormPreview(item, diagnostics) {
 
     panel.webview.onDidReceiveMessage(async (message) => {
         if (message.type === "save") {
-            const latestYamlText = await fs.promises.readFile(configUri.fsPath, "utf8");
+            latestYamlText = await fs.promises.readFile(configUri.fsPath, "utf8");
             const updatedYaml = applyFormUpdates(latestYamlText, {
                 scalars: message.scalars || {},
                 arrays: parseArrayFieldPayload(message.arrays || {}),
@@ -402,17 +408,30 @@ async function openFormPreview(item, diagnostics) {
                 return;
             }
 
+            const confirmLabel = localizer.t("button.initializeFromSchemaConfirm");
+            const cancelLabel = localizer.t("button.cancel");
+            const userChoice = await vscode.window.showWarningMessage(
+                localizer.t("message.initializeFromSchemaConfirm"),
+                {modal: true},
+                confirmLabel,
+                cancelLabel);
+
+            if (userChoice !== confirmLabel) {
+                return;
+            }
+
             const sampleYaml = createSampleConfigYaml(schemaInfo);
             await fs.promises.writeFile(configUri.fsPath, sampleYaml, "utf8");
             const document = await vscode.workspace.openTextDocument(configUri);
             await document.save();
+            latestYamlText = sampleYaml;
             await validateConfigFile(configUri, diagnostics);
             panel.webview.html = renderFormHtml(
                 path.basename(configUri.fsPath),
                 schemaInfo,
-                parseTopLevelYaml(sampleYaml),
+                parseTopLevelYaml(latestYamlText),
                 {
-                    commentLookup: extractYamlComments(sampleYaml),
+                    commentLookup: extractYamlComments(latestYamlText),
                     canInitializeFromSchema: false
                 });
             void vscode.window.showInformationMessage(localizer.t("message.formInitialized"));
@@ -1178,7 +1197,7 @@ function renderYamlCommentBlock(field) {
  */
 function renderCommentEditor(field) {
     const commentPath = field.displayPath || field.path;
-    if (commentPath.includes("[]")) {
+    if (isTemplatePath(commentPath)) {
         return "";
     }
 
@@ -1273,7 +1292,7 @@ function collectFormFields(schemaNode, yamlNode, currentPath, depth, fields, uns
     const requiredSet = new Set(Array.isArray(schemaNode.required) ? schemaNode.required : []);
 
     for (const [key, propertySchema] of Object.entries(schemaNode.properties || {})) {
-        const propertyPath = currentPath ? `${currentPath}.${key}` : key;
+        const propertyPath = joinPropertyPath(currentPath, key);
         const label = propertySchema.title || key;
         const propertyValue = yamlMap.get(key);
 
@@ -1317,7 +1336,7 @@ function collectFormFields(schemaNode, yamlNode, currentPath, depth, fields, uns
                 propertySchema.items,
                 undefined,
                 "",
-                `${propertyPath}[]`,
+                joinArrayTemplatePath(propertyPath),
                 depth + 1,
                 itemFieldsTemplate,
                 unsupported,
@@ -1386,7 +1405,7 @@ function buildObjectArrayItemModels(itemSchema, yamlNode, propertyPath, depth, u
     const items = [];
     for (let index = 0; index < yamlNode.items.length; index += 1) {
         const itemNode = yamlNode.items[index];
-        const itemPath = `${propertyPath}[${index}]`;
+        const itemPath = joinArrayIndexPath(propertyPath, index);
         if (!itemNode || itemNode.kind !== "object") {
             unsupported.push({
                 path: itemPath,
@@ -1437,8 +1456,8 @@ function collectObjectArrayItemFields(schemaNode, yamlNode, localPath, displayPa
     const requiredSet = new Set(Array.isArray(schemaNode.required) ? schemaNode.required : []);
 
     for (const [key, propertySchema] of Object.entries(schemaNode.properties || {})) {
-        const itemLocalPath = localPath ? `${localPath}.${key}` : key;
-        const itemDisplayPath = `${displayPath}.${key}`;
+        const itemLocalPath = joinPropertyPath(localPath, key);
+        const itemDisplayPath = joinPropertyPath(displayPath, key);
         const label = propertySchema.title || key;
         const propertyValue = yamlMap.get(key);
 
diff --git a/tools/gframework-config-tool/src/localization.js b/tools/gframework-config-tool/src/localization.js
index 4cb43ad5..3c8a74d7 100644
--- a/tools/gframework-config-tool/src/localization.js
+++ b/tools/gframework-config-tool/src/localization.js
@@ -1,3 +1,5 @@
+const {ValidationMessageKeys} = require("./localizationKeys");
+
 /**
  * Create a tiny in-process localizer for the extension runtime and webview.
  * VS Code contribution points use package.nls files, while runtime strings are
@@ -10,12 +12,26 @@
 function createLocalizer(language) {
     const normalizedLanguage = String(language || "en").toLowerCase();
     const isChinese = normalizedLanguage.startsWith("zh");
-    const languageTag = isChinese ? "zh-CN" : "en";
-    const dictionary = isChinese ? zhCnMessages : enMessages;
+    const isTraditionalChinese =
+        normalizedLanguage === "zh-tw" ||
+        normalizedLanguage === "zh-hk" ||
+        normalizedLanguage === "zh-mo" ||
+        normalizedLanguage.startsWith("zh-hant");
+    const isSimplifiedChinese = isChinese && !isTraditionalChinese;
+    const languageTag = isTraditionalChinese
+        ? normalizedLanguage
+        : isSimplifiedChinese
+            ? "zh-CN"
+            : "en";
+    const dictionary = isTraditionalChinese
+        ? enMessages
+        : isSimplifiedChinese
+            ? zhCnMessages
+            : enMessages;
 
     return {
         languageTag,
-        isChinese,
+        isChinese: isSimplifiedChinese,
         t(key, params) {
             const template = dictionary[key] || enMessages[key] || key;
             return template.replace(/\{([A-Za-z0-9_]+)\}/gu, (match, token) => {
@@ -38,6 +54,7 @@ const enMessages = {
     "message.schemaNotFound": "Matching schema file was not found.",
     "message.formSaved": "Config file saved from form preview.",
     "message.formInitialized": "Example config initialized from the schema.",
+    "message.initializeFromSchemaConfirm": "Initializing from the schema will replace the current configuration and may discard unsaved form changes. Do you want to continue?",
     "message.noYamlFilesInDomain": "No YAML config files were found in the selected domain.",
     "message.batchEditNeedsSchema": "Batch edit requires a matching schema file for the selected domain.",
     "message.batchEditNoEditableFields": "No top-level scalar or scalar-array fields were found in the matching schema.",
@@ -55,6 +72,8 @@ const enMessages = {
     "detail.refTable": "ref: {refTable}",
     "detail.arrayType": "array<{itemType}>",
     "detail.default": "default",
+    "button.cancel": "Cancel",
+    "button.initializeFromSchemaConfirm": "Initialize from schema",
     "input.batchArray.title": "Batch Edit Array: {field}",
     "input.batchArray.prompt": "Enter comma-separated items for '{fieldKey}' (expected array<{itemType}>). Leave empty to clear the array.",
     "input.batchArray.placeholder.allowedItems": "Allowed items: {values}",
@@ -90,7 +109,14 @@ const enMessages = {
     "webview.unsupported.array": "Unsupported array shapes are currently raw-YAML-only in the form preview.",
     "webview.unsupported.type": "{type} fields are currently raw-YAML-only.",
     "webview.unsupported.objectArrayMixed": "Object-array items must be mappings. Use raw YAML if the current file mixes scalar and object items.",
-    "webview.unsupported.nestedObjectArray": "Nested object-array fields are currently raw-YAML-only inside the object-array editor."
+    "webview.unsupported.nestedObjectArray": "Nested object-array fields are currently raw-YAML-only inside the object-array editor.",
+    [ValidationMessageKeys.enumMismatch]: "Property '{displayPath}' must be one of: {values}.",
+    [ValidationMessageKeys.expectedArray]: "Property '{displayPath}' is expected to be an array.",
+    [ValidationMessageKeys.expectedObject]: "{subject} is expected to be an object.",
+    [ValidationMessageKeys.expectedScalarShape]: "Property '{displayPath}' is expected to be '{schemaType}', but the current YAML shape is '{yamlKind}'.",
+    [ValidationMessageKeys.expectedScalarValue]: "Property '{displayPath}' is expected to be '{schemaType}', but the current scalar value is incompatible.",
+    [ValidationMessageKeys.missingRequired]: "Required property '{displayPath}' is missing.",
+    [ValidationMessageKeys.unknownProperty]: "Property '{displayPath}' is not declared in the matching schema."
 };
 
 const zhCnMessages = {
@@ -102,6 +128,7 @@ const zhCnMessages = {
     "message.schemaNotFound": "未找到匹配的 schema 文件。",
     "message.formSaved": "已从表单预览保存配置文件。",
     "message.formInitialized": "已根据 schema 初始化示例配置。",
+    "message.initializeFromSchemaConfirm": "从 schema 初始化会替换当前配置，并且可能丢失尚未保存的表单修改。是否继续？",
     "message.noYamlFilesInDomain": "所选配置域中没有找到 YAML 配置文件。",
     "message.batchEditNeedsSchema": "批量编辑要求该配置域存在匹配的 schema 文件。",
     "message.batchEditNoEditableFields": "匹配的 schema 中没有可批量编辑的顶层标量字段或标量数组字段。",
@@ -119,6 +146,8 @@ const zhCnMessages = {
     "detail.refTable": "引用表：{refTable}",
     "detail.arrayType": "数组<{itemType}>",
     "detail.default": "默认值",
+    "button.cancel": "取消",
+    "button.initializeFromSchemaConfirm": "从 schema 初始化",
     "input.batchArray.title": "批量编辑数组：{field}",
     "input.batchArray.prompt": "请输入“{fieldKey}”的逗号分隔项（期望类型：数组<{itemType}>）。留空表示清空数组。",
     "input.batchArray.placeholder.allowedItems": "允许项：{values}",
@@ -154,7 +183,14 @@ const zhCnMessages = {
     "webview.unsupported.array": "当前表单预览暂不支持这种数组结构，请改用原始 YAML。",
     "webview.unsupported.type": "当前表单预览暂不支持 {type} 字段，请改用原始 YAML。",
     "webview.unsupported.objectArrayMixed": "对象数组中的每一项都必须是映射对象。如果当前文件混用了标量项和对象项，请改用原始 YAML。",
-    "webview.unsupported.nestedObjectArray": "对象数组编辑器内暂不支持更深层的对象数组字段，请改用原始 YAML。"
+    "webview.unsupported.nestedObjectArray": "对象数组编辑器内暂不支持更深层的对象数组字段，请改用原始 YAML。",
+    [ValidationMessageKeys.enumMismatch]: "属性“{displayPath}”必须是以下值之一：{values}。",
+    [ValidationMessageKeys.expectedArray]: "属性“{displayPath}”应为数组。",
+    [ValidationMessageKeys.expectedObject]: "{subject}",
+    [ValidationMessageKeys.expectedScalarShape]: "属性“{displayPath}”应为“{schemaType}”，但当前 YAML 结构是“{yamlKind}”。",
+    [ValidationMessageKeys.expectedScalarValue]: "属性“{displayPath}”应为“{schemaType}”，但当前标量值不兼容。",
+    [ValidationMessageKeys.missingRequired]: "缺少必填属性“{displayPath}”。",
+    [ValidationMessageKeys.unknownProperty]: "属性“{displayPath}”未在匹配的 schema 中声明。"
 };
 
 module.exports = {
diff --git a/tools/gframework-config-tool/src/localizationKeys.js b/tools/gframework-config-tool/src/localizationKeys.js
new file mode 100644
index 00000000..caf2f635
--- /dev/null
+++ b/tools/gframework-config-tool/src/localizationKeys.js
@@ -0,0 +1,13 @@
+const ValidationMessageKeys = Object.freeze({
+    enumMismatch: "validation.enumMismatch",
+    expectedArray: "validation.expectedArray",
+    expectedObject: "validation.expectedObject",
+    expectedScalarShape: "validation.expectedScalarShape",
+    expectedScalarValue: "validation.expectedScalarValue",
+    missingRequired: "validation.missingRequired",
+    unknownProperty: "validation.unknownProperty"
+});
+
+module.exports = {
+    ValidationMessageKeys
+};
diff --git a/tools/gframework-config-tool/test/configValidation.test.js b/tools/gframework-config-tool/test/configValidation.test.js
index e62415dc..225be952 100644
--- a/tools/gframework-config-tool/test/configValidation.test.js
+++ b/tools/gframework-config-tool/test/configValidation.test.js
@@ -85,6 +85,20 @@ phases:
     assert.equal(yaml.map.get("phases").items[0].map.get("wave").value, "1");
 });
 
+test("parseTopLevelYaml should keep complex mapping keys", () => {
+    const yaml = parseTopLevelYaml(`
+my-key: slime
+"complex key": value
+root:
+  item.id: potion
+`);
+
+    assert.equal(yaml.kind, "object");
+    assert.equal(yaml.map.get("my-key").value, "slime");
+    assert.equal(yaml.map.get("complex key").value, "value");
+    assert.equal(yaml.map.get("root").map.get("item.id").value, "potion");
+});
+
 test("validateParsedConfig should report missing and unknown nested properties", () => {
     const schema = parseSchemaContent(`
         {
@@ -312,6 +326,22 @@ skills:
     assert.equal(comments["skills[0].id"], "Skill id note");
 });
 
+test("extractYamlComments should keep comments for complex YAML keys", () => {
+    const comments = extractYamlComments(`
+# Dashed key comment
+my-key: Slime
+# Quoted key comment
+"complex key": value
+root:
+  # Dotted key comment
+  item.id: potion
+`);
+
+    assert.equal(comments["my-key"], "Dashed key comment");
+    assert.equal(comments["complex key"], "Quoted key comment");
+    assert.equal(comments["root.item.id"], "Dotted key comment");
+});
+
 test("applyFormUpdates should preserve and update YAML comments", () => {
     const updated = applyFormUpdates(
         [
diff --git a/tools/gframework-config-tool/test/localization.test.js b/tools/gframework-config-tool/test/localization.test.js
index 30d2bf18..503eae15 100644
--- a/tools/gframework-config-tool/test/localization.test.js
+++ b/tools/gframework-config-tool/test/localization.test.js
@@ -23,3 +23,14 @@ test("createLocalizer should switch to Simplified Chinese for zh languages", ()
         localizer.t("message.batchEditUpdated", {count: 2, domain: "monster"}),
         "已在“monster”中批量更新 2 个配置文件。");
 });
+
+test("createLocalizer should fall back to English for Traditional Chinese locales", () => {
+    const localizer = createLocalizer("zh-TW");
+
+    assert.equal(localizer.languageTag, "zh-tw");
+    assert.equal(localizer.isChinese, false);
+    assert.equal(localizer.t("webview.button.save"), "Save Form");
+    assert.equal(
+        localizer.t("message.batchEditUpdated", {count: 2, domain: "monster"}),
+        "Batch updated 2 config file(s) in 'monster'.");
+});